6 100 | = | ( | ( | x | − | 99 | ) | ÷ | 99 | ) | x | × | 360 | ÷ | 180 | × | x | × | 100 100 |
| 方程右边 = | ( | ( | x | − | 99 | ) | ÷ | 99 | ) | x | × | 2 | x |
6 100 | = | ( | ( | x | − | 99 | ) | ÷ | 99 | ) | x | × | 2 | x |
| 方程右边 = | ( | x | − | 99 | ) | ÷ | 99 | × | x | × | 2 | x |
| = | ( | x | − | 99 | ) | × | 2 99 | x | x |
| = | x | × | 2 99 | x | x | − | 99 | × | 2 99 | x | x |
| = | x | × | 2 99 | x | x | − | 2 | x | x |
6 100 | = | x | × | 2 99 | x | x | − | 2 | x | x |